An electrocardiogram display method includes the following steps. First, the electrocardiogram is measured, the ST amplitudes of multiple electrocardiogram leads are then calculated based on the measured electrocardiogram, the measured electrocardiograms are classified according to regions of the heart, and bar charts of the ST amplitudes of the electrocardiogram leads are drawn according to the region classification.

An electrocardiogram display method includes the following steps. First, the electrocardiogram is measured, the ST amplitudes of multiple electrocardiogram leads are then calculated based on the measured electrocardiogram, the measured electrocardiograms are classified according to regions of the heart, and bar charts of the ST amplitudes of the electrocardiogram leads are drawn according to the region classification.

Described herein are apparatuses and methods for classifying a patient as being asleep or awake. Such an apparatus can include an accelerometer and a processor. The accelerometer, alone or in combination with the processor, is used to determine an activity level of the patient and a posture of the patient. The processor is configured to classify the patient as being asleep in response to both (i) the posture of the patient being recumbent or reclined for at least a sleep latency duration, and (ii) the activity level of the patient not exceeding an activity threshold for at least the sleep latency duration; and classify the patient as being awake in response to at least one of (iii) the posture of the patient being upright for at least an awake latency duration, or (iv) the activity level of the patient exceeding the activity threshold for at least the awake latency duration.